pdf_path = '/home/leo/python-work/pdf/qcom-qnx'  #pdf所在的路径
image_path = '/home/leo/python-work/pdf/image' #存放图片所在的位置
AK="at5bXsnnV34p5qb8s8cF5iEG"; #api key
SK= "5UEW2v3tqjoux0j2Yej1ClxmP3euybGX" #secert key